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A
Anonymous
February 23, 2016
Question

Setting restrictions for Field Type: Telephone in Form

  • February 23, 2016
  • 3 replies
  • 5045 views

Hi All,

We use forms asking for Phone Numbers from our customers in the landing pages that we publish.

The details of the label are -

Label Name: Phone Number

Marketo Field: Phone Number

Field Type: Telephone

Right now the field accepts phone numbers even if they are not 10 digits long

I wanted to keep a check on the backend (despite the validation message that I am showing to the LP viewers) so that only 10 to 13 digit numbers are accepted.

Could you guys help me out with this?

Thank You

regards,

-Prabash.

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3 replies

A
Anonymous
February 23, 2016

I think you will need some javascript to manage this field on the page level so that it cannot be submitted without the proper format

SanfordWhiteman
SanfordWhiteman
Level 10
February 23, 2016

I think you will need some javascript to manage this field on the page level so that it cannot be submitted without the proper format

It sounds to me like @Prabash is validating on the client side but is concerned about people skipping validation.

SanfordWhiteman
SanfordWhiteman
Level 10
February 23, 2016

Right now the field accepts phone numbers even if they are not 10 digits long

I wanted to keep a check on the backend (despite the validation message that I am showing to the LP viewers) so that only 10 to 13 digit numbers are accepted.

Could you guys help me out with this?

Server-side validation is going to require a webhook -- a simple webhook, but nevertheless one that can do more than a flow. Rajesh Talele Aruba Prod​ can surely hook you up via his managed webhook service.

But I'm not convinced of the need for phone number validation ​alone. If you have people bypassing client-side field validation, surely they are putting invalid data into other fields as well.  If you are having widespread problems with people bypassing validation you should roll out a ReCAPTCHA on your form.

A
Anonymous
February 23, 2016

Thanks Sanford. Appreciate it.

Prabash,

See if the 'web hook service' at Web Hook Library can help.

This particular web hook service is free to use.

Rajesh

A
Anonymous
March 21, 2016

Hi,

I am currently doing this by the following workaround:

Field Type: Number (changed from Telephone)

And in the restrictions section, I define my minimum and maximum number values to be accepted. Let's say I want to accept phone numbers only ranging from 10 to 11 digits; then:

Minimum Number: 1000000000

Maximum Number: 99999999999

This ensures that digits coming into my Phone Number field only range from 10 to 11 digits only

Thanks!

Regards,

Prabash..

J
Jim_DiModica
Level 3
July 21, 2017

Thanks, Prabash -

I tried the solution but not sure about its results.The field appears with scroll arrows and clicking them displays the minimum number value. Please see here.

Any info appreciated.

Thanks!

SanfordWhiteman
SanfordWhiteman
Level 10
July 22, 2017

There are 2 totally different questions here.

The original question is about verifying on the back end -- that is, even if someone maliciously posts invalid data by skipping JavaScript validation -- that the field contains between x and y digits.

The above solution (curiously posted by the same person who was originally talking about the back end?) is a client-side validation that can just as easily be bypassed as the built-in phone validation.

If you want between 10 and 13 digits, I would start w/a Text field with the Mask Input 9999999999999. That takes care of the digits and the maximum length. Then do the minimum length check in JS.

MktoForms2.whenReady(function(form){
  form.onValidate(function(native){
     if (!native) return;
    
     var currentVals = form.getValues(),
         phoneField = 'Phone',
         RE_PHONE = /^\d{10,13}$/;
     form.submittable(false);
     if( !RE_PHONE.test(currentVals.phoneField) ) {
        alert('Too many or not enough digits');
     } else {
        form.submittable(true);
     }
  });
});
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